Interface chassis for fiber optic transport system

• US 5,367,598 A
• Filed: 10/21/1993
• Issued: 11/22/1994
• Est. Priority Date: 10/21/1993
• Status: Expired due to Fees

• Current Assignee: NEC America Inc (NEC Corporation)
• Original Assignee: NEC America Inc (NEC Corporation)
• Inventors: Vercruyssen, Gustav J., Dirriwachter, Antonius B., Devenish, William R. III
• Primary Examiner(s): Lee, John D.
• Application Number:
  US08/140,784
• Time in Patent Office: 397 Days
• Field of Search: 385/53, 385/134, 385/135, 385/136, 385/137, 385/147
• US Class Current: 385/135
• CPC Class Codes: G02B 6/4452 Distribution frames
• CPC Class Codes: G02B 6/44526 Panels or rackmounts covering a whole width of the frame or rack
• CPC Class Codes: G02B 6/44528 Patch-cords; Connector arrangements in the system or in the box routing arrangements H04Q1/00
• CPC Class Codes: G02B 6/4454 with splices
• CPC Class Codes: G02B 6/4455 characterised by the way of extraction or insertion of the cassette in the distribution frame, e.g. pivoting, sliding, rotating or gliding

Abstract

An interface housing which has a fiber spool to store slack in the fiber trunks and a card cage to interface the trunk mounted on the door of the housing. The door is hinged on one side of the housing so that, when the door swings open, the entire card cage and fiber spool are clear of the housing and readily accessible and releases the PCB lock. A ribbon connector connects the back plane of the card cage to an interface terminal board on the wall of the housing to which external wire-wrap and/or RJ48X connections may be made. Backup batteries in a tray are disposed along the bottom of the housing and secured in place with a cover. When the housing door swings shut, the fiber optic spool fits in front of back-up batteries in the tray and the card cage fits over the batteries.

Claims

1. A chassis for interfacing fiber optic trunks to wire communication lines, comprising in combination:

an enclosure with first and second side walls, a top wall, a bottom wall, a rear wall, and a front opening;

a door;

means for pivotally attaching said door to said enclosure adjacent said first side wall of said enclosure, said door movable between a closed position covering said front opening and an open position;

a card cage for fiber optic to wire interface cards mounted on an upper portion of said door;

a spool for forming slack loops in said fiber optic trunks, said spool mounted on said door beneath said card cage and orientated so that said slack loops lie in a plane approximately parallel to said door;

a back plane connected to said card cage adjacent said means for pivotally attaching said door;

a terminal board secured to said rear wall adjacent said second side wall and adjacent said top wall;

flexible cable means connecting said back plane and said terminal board; and

a back-up battery tray secured to said bottom wall for supporting a back-up battery assembly with said back-up battery assembly set back from said front opening whereby with said door in said open position said card cage and said spool are clear of said enclosure and with said door in said closed position said card cage fits in said enclosure above said back-up battery assembly and said spool fits in front of said back-up battery assembly.

2. A chassis for interfacing fiber optic trunks to wire communication lines as in claim 1, further including locking means mounted on said card cage for locking in place said wire interface cards in said card cage.

3. A chassis for interfacing fiber optic trunks to wire communication lines as in claim 2, wherein said locking means is a "U"-shaped clamp pivotally mounted on said card cage.

4. A chassis for interfacing fiber optic trunks to wire communication lines as in claim 1, wherein said spool provides a minimum of a two-inch radius in said slack loops.

5. A chassis for interfacing fiber optic trunks to wire communication lines as in claim 1, further including a passive stop for maintaining said door in its open position.

8. A chassis for interfacing fiber optic trunks to wire communication lines as in claim 2, wherein said locking means is an "U"-shaped clamp pivotally mounted on said card cage.

6. A chassis for interfacing fiber optic trunks to wire communication lines, comprising in combination:

an enclosure with first and second side walls, a top wall, a bottom wall, a rear wall, and a front opening;

a door;

means for pivotally attaching said door to said enclosure adjacent said first side wall of said enclosure, said door movable between a closed position covering said front opening and an open position at approximately a right angle to the plane of said front opening;

a card cage for fiber optic to wire interface cards mounted on an upper portion of said door;

a spool for forming slack loops in said fiber optic trunks, said spool mounted on said door beneath said card cage and orientated so that said slack loops lie in a plane approximately parallel to said door;

a back plane connected to said card cage adjacent said means for pivotally attaching said door;

a terminal board secured to said rear wall adjacent said second side wall and adjacent said top wall;

flexible cable means connecting said back plane and said terminal board; and

a back-up battery tray secured to said bottom wall for supporting a back-up battery assembly with said back-up battery assembly set back from said front opening and that extends in length a majority of the distance from said first side wall to said second side wall and in height to a point below said card cage whereby with said door in said open position said card cage and said spool are clear of said enclosure and with said door in said closed position said card cage fits in said enclosure above said back-up battery assembly and said spool fits in front of said back-up battery assembly.

7. A chassis for interfacing fiber optic trunks to wire communication lines as in claim 6, further including locking means mounted on said card cage for locking in place said wire interface cards in said card cage.